In this photo taken Tuesday, Aug. 10, 2010, released by China's Xinhua News Agency, people walk among disaster relief tents set up at the No.3 Middle School in Zhouqu County, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province. Heavy rains Wednesday lashed the remote section of northwestern China where weekend flooding killed at least 702 people, as hopes of finding more survivors faded and crews worked to stave off outbreaks of disease. (AP Photo/Xinhua, Wang He)

Photo by: Wang He

In this photo taken Tuesday, Aug. 10, 2010, released by China's Xinhua News Agency, people walk among disaster relief tents set up at the No.3 Middle School in Zhouqu County, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province. Heavy rains Wednesday lashed the remote section of northwestern China where weekend flooding killed at least 702 people, as hopes of finding more survivors faded and crews worked to stave off outbreaks of disease. (AP Photo/Xinhua, Wang He)